Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
11 other detections within 20 km in the last 24 hours, the nearest 7 km from here.
This alert expired on 17 May 2026 at 04:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 65 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 9:53PM CDT until May 16 at 11:00PM CDT by NWS Hastings NE
Urban PEI: 24,924 within a heuristic 50 km radius; not unique people.
How we know
11 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 34 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 40.2703, -98.0062 |
| Nearest City | Hastings (48 km) |
| Urban exposure index (PEI) | 24.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-17T02:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.3d2dccf0879207a4e24f9cf4e79c065b |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-17T02:53:00.000Z.
First archived: 2026-05-17T02:55:10.297Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Osborne, KS; Rooks, KS; Washington, KS; Graham, KS and 10 more areas |
| Headline | Severe Thunderstorm Warning issued May 16 at 9:53PM CDT until May 16 at 11:00PM CDT by NWS Hastings NE |
| Expires | 2026-05-16T23:00:00-05:00 |
| SenderName | NWS Hastings NE |
| HasExactCoords | true |
| MergedCount | 13 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3d2dccf0879207a4e24f9cf4e79c065bac8c0455.001.1","noaa_urn:oid:2.49.0.1.840.0.7d850d0aa333ebedb397f6a9e2dad9c244b8d90e.001.1","noaa_urn:oid:2.49.0.1.840.0.3f80f7e31239ac728ae5b2c0c23bc3bfbbbd2335.001.1","noaa_urn:oid:2.49.0.1.840.0.5383821ed5f8f29764da7d7811b309b30531f51e.001.1","noaa_urn:oid:2.49.0.1.840.0.d17675cb81044ce70084beb0d9dbb3db19a9d682.001.1","noaa_urn:oid:2.49.0.1.840.0.903b6c7317e03a19c6d824d576527993a65bf326.001.1","noaa_urn:oid:2.49.0.1.840.0.115ea62b6d7140982bdf61e755cf8d4305627cca.001.1","noaa_urn:oid:2.49.0.1.840.0.564ea203f8beea829f48d9fe046e9ccc40307ed3.002.1","noaa_urn:oid:2.49.0.1.840.0.a41fcd2b02f04d24f9a57ed182bbac13a962affd.001.1","noaa_urn:oid:2.49.0.1.840.0.ace9560ee99e1481a4596f99ecf857f026545089.001.1","noaa_urn:oid:2.49.0.1.840.0.d5d4abec25f671add85ccbf6116ca39d341e98ff.001.1","noaa_urn:oid:2.49.0.1.840.0.56339992a994a556259f2993cb1a5c132f24a347.001.1","noaa_urn:oid:2.49.0.1.840.0.c3aa24aaccd9dd1c175be723e9dd977b9de79789.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | 3 SSE Grand Island |
| Iem County | Hall |
| Iem State | NE |
| Iem Wfo | GID |
| Iem Remark | NWS Employee. |
| MergedSources | [{"id":"iem_G_40.760_-97.840_1778985240000","source":"iem","severity":"low","severityValue":25,"timestamp":1778985240000,"latitude":40.76,"longitude":-97.84},{"id":"iem_H_40.870_-98.340_1778982540000","source":"iem","severity":"low","severityValue":25,"timestamp":1778982540000,"latitude":40.87,"longitude":-98.34},{"id":"iem_H_39.860_-97.320_1778982360000","source":"iem","severity":"low","severityValue":25,"timestamp":1778982360000,"latitude":39.86,"longitude":-97.32},{"id":"iem_H_40.780_-97.810_1778971320000","source":"iem","severity":"low","severityValue":25,"timestamp":1778971320000,"latitude":40.78,"longitude":-97.81},{"id":"iem_H_39.970_-97.430_1778982000000","source":"iem","severity":"low","severityValue":25,"timestamp":1778982000000,"latitude":39.97,"longitude":-97.43},{"id":"iem_H_40.720_-97.940_1778968200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778968200000,"latitude":40.72,"longitude":-97.94},{"id":"iem_D_40.870_-98.000_1778985300000","source":"iem","severity":"low","severityValue":25,"timestamp":1778985300000,"latitude":40.87,"longitude":-98},{"id":"iem_H_40.780_-97.810_1778968320000","source":"iem","severity":"low","severityValue":25,"timestamp":1778968320000,"latitude":40.78,"longitude":-97.81},{"id":"iem_G_40.890_-98.000_1778984460000","source":"iem","severity":"low","severityValue":25,"timestamp":1778984460000,"latitude":40.89,"longitude":-98},{"id":"iem_H_40.890_-98.340_1778982660000","source":"iem","severity":"low","severityValue":25,"timestamp":1778982660000,"latitude":40.89,"longitude":-98.34}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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